New LED drivers for Highest-Quality Videos

Large-panel displays designers have now access to the two new 16-channel LED drivers, TLC5942 and TLC5945 provided by Texas Instruments, one of the top companies specialized in designing and manufacturing of analog and digital signal processing and DLP chip technologies.


The two constant-current sink LED drivers offer dot correction and grayscale on one integrated circuit to result in high-quality video, providing this way best system reliability plus dynamic brightness control, enhancing resolution in large-panel LED displays, including mono, multi and full-color LED-based screens for LED signboards and display backlighting.

With advanced capabilities like analog and digital dimming, TLC5942 driver offers 128 step dot correction and compensates for LED luminous mismatch, permitting both grayscale control and dot correction to be accessed through separate and dedicated serial interface ports.


As the maximum current value of the 15 channels can be set via a single external resistor, higher currents are provided by paralleling channels and the TLC5945 driver is perfect for fast action video displays having a refreshing rate of 30 MHz without delays.


The LED drivers integrate error detection circuits for LED open detection and a thermal error flag, the first one identifying a broken or disconnected LED during displaying time, while the TEF is indicating over-temperature conditions, so all output drivers are turned off when the TEF is set.
Texas Instruments started to ship the drivers that will be available in a 32-pin QFN or 28-pin HTSSOP package, at a retail price of $1.75 in 1,000 quantities.

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